ABIGAIL / Regexp-Sudoku-2022062101 / t / sudokus / renban-3 
3 . .  . . 7  . . .
. 7 .  . 1 .  . . .
. . .  9 . .  . . .

. . 1  . . .  . . 9
. 2 .  . . .  . 8 .
9 . .  . . .  7 . .

. . .  . . 4  . . .
. . .  . 3 .  . 7 .
. . .  2 . .  . . 6

==
Solution
3 4 9  6 2 7  8 5 1
2 7 6  8 1 5  3 9 4
5 1 8  9 4 3  2 6 7

8 3 1  7 5 2  6 4 9
6 2 7  4 9 1  5 8 3
9 5 4  3 8 6  7 1 2

7 9 3  5 6 4  1 2 8
4 6 2  1 3 8  9 7 5
1 8 5  2 7 9  4 3 6
==
Create
Regexp::Sudoku:: -> new -> init
                 -> set_renban (qw [R1C7 R1C8 R2C8 R3C8 R3C9])
                 -> set_renban (qw [R2C6 R2C7 R3C7 R4C7 R4C8])
                 -> set_renban (qw [R3C5 R3C6 R4C6 R5C6 R5C7])
                 -> set_renban (qw [R4C4 R4C5 R5C5 R6C5 R6C6])
                 -> set_renban (qw [R5C3 R5C4 R6C4 R7C4 R7C5])
                 -> set_renban (qw [R6C2 R6C3 R7C3 R8C3 R8C4])
                 -> set_renban (qw [R7C1 R7C2 R8C2 R9C2 R9C3])
==
Name: A Superb Renban Sudoku by Gaurav Kumar Jain
URL: https://www.youtube.com/watch?v=qGG8cw-1Ea0
Runtime: 05:12:46
Lengths: 62200 (subject) & 26451 (pattern)
Number of statements: 883